- Wunsch, Stefanie;
- Zurl, Christoph;
- Strohmaier, Heimo;
- Meinitzer, Andreas;
- Rabensteiner, Jasmin;
- Posch, Wilfried;
- Lass-Flörl, Cornelia;
- Cornely, Oliver;
- Pregartner, Gudrun;
- König, Elisabeth;
- Feierl, Gebhard;
- Hoenigl, Martin;
- Prattes, Juergen;
- Zollner-Schwetz, Ines;
- Valentin, Thomas;
- Krause, Robert
Interleukin (IL) 17A plays a decisive role in anti-Candida host defense. Previous data demonstrated significantly increased IL-17A values in candidemic patients. We evaluated levels and time courses of IL-17A, and other cytokines suggested to be involved in Candida-specific immunity (IL-6, IL-8, IL-10, IL-17F, IL-22, IL-23, interferon-γ, tumor necrosis factor-α, Pentraxin-related protein 3, transforming growth factor-β) in patients with invasive candidiasis (IC) compared to bacteremic patients (Staphylococcus aureus, Escherichia coli) and healthy controls (from previous 4 days up to day 14 relative to the index culture (-4; 14)). IL-17A levels were significantly elevated in all groups compared to healthy controls. In IC, the highest IL-17A values were measured around the date of index sampling (-1; 2), compared to significantly lower levels prior and after sampling the index culture. Candidemic patients showed significantly higher IL-17A values compared to IC other than candidemia at time interval (-1; 2) and (3; 7). No significant differences in IL-17A levels could be observed for IC compared to bacteremic patients. Candidemic patients had higher IL-8, IL-10, IL-22, IFN-γ, PTX3 and TNF-α values compared to non-candidemic. Based on the limited discriminating competence between candidemia and bacteremia, IL-17A has to be considered a biomarker for blood stream infection rather than invasive Candida infection.